391716413 has 8 divisors (see below), whose sum is σ = 430050720. Its totient is φ = 353836080.

The previous prime is 391716401. The next prime is 391716433. The reversal of 391716413 is 314617193.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 391716413 - 2¹⁸ = 391454269 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391716433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111683 + ... + 115136.

It is an arithmetic number, because the mean of its divisors is an integer number (53756340).

Almost surely, 2^391716413 is an apocalyptic number.

It is an amenable number.

391716413 is a deficient number, since it is larger than the sum of its proper divisors (38334307).

391716413 is a wasteful number, since it uses less digits than its factorization.

391716413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226987.

The product of its digits is 13608, while the sum is 35.

The square root of 391716413 is about 19791.8269242635. The cubic root of 391716413 is about 731.6846144751.

The spelling of 391716413 in words is "three hundred ninety-one million, seven hundred sixteen thousand, four hundred thirteen".